Search results for: Yongjian Li

Items from 1 to 20 out of 164 results

article

ZrO₂ Matrix Toughened Ceramic Material‐Strength and Toughness

Bin Qi, Shuaishuai Liang, Yongjian Li, Chenchen Zhou, more

Advanced Engineering Materials > 24 > 6 > n/a - n/a

ZrO₂ ceramic exhibits the characteristics of high hardness, good thermochemical stability, desirable biocompatibility, and unique stress‐activated tetragonal to monoclinic transformation toughening, thus having broad development prospects. However, as a typical ceramic material, it has the common shortcoming of brittleness and seriously limits the possible applications. In recent years, worldwide...

article

Optimal Financing Models Offered by Manufacturers with Risk Aversion and Market Competition Considerations

Yongjian Li, Lu Liu, Lipan Feng, Wen Wang, more

Decision Sciences > 51 > 6 > 1411 - 1454

Trade credit finance (TCF), retailer independent finance (RIF), and partial credit guarantee (PCG) finance are all important financing tools for capital‐constrained retailers. Risk aversion has a significant impact on financing, but it is difficult to measure. This research investigates the manufacturer's financing provision strategies considering risk aversion and capital market competition. First,...

article

Safety and efficacy of bone marrow-derived cells therapy on cardiomyopathy: a meta-analysis

Chao Wang, Jingzhao Li, Boya Zhang, Yongjian Li

Stem Cell Research & Therapy > 2019 > 10 > 1 > 1-12

Background Controversial results still existed on the clinical utility of bone marrow-derived cells (BMCs) for cardiomyopathy (CMP). This study aims to reveal the true power of this promising approach by synthesizing all the available data on this subject matter. Methods Twenty studies including 1418 patients were identified from systematic search. Weighted mean differences for changes in left ventricular...

article

Margination mechanism of stiffened red blood cell in microchannel with different cross-section shapes

Yuanyuan Chen, Yongjian Li, Donghai Li, Jiang Li, more

Microfluidics and Nanofluidics > 2019 > 23 > 2 > 1-10

An investigation of red blood cells (RBCs) margination’s dependence on channel cross-section shape is presented. The irregularity of the vascular cross-section has been proved to satisfy the condition for stiffened RBCs to perform margination in vivo, while the effect of channel geometry along channel width on cell margination has not been revealed. To illustrate this problem, RBCs’ flowing behaviors...

article

Refined composite multiscale fuzzy entropy: Localized defect detection of rolling element bearing

Yongjian Li, Bingrong Miao, Weihua Zhang, Peng Chen, more

Journal of Mechanical Science and Technology > 2019 > 33 > 1 > 109-120

We proposed an appealing method based on refined composite multiscale fuzzy entropy (RCMFE), infinite feature selection (Inf-FS) algorithm, and support vector machine (SVM) for implementing localized defect detection to keep the downtime and extended damage caused by incipient failure of bearing at a minimum. As a useful approach, multiscale fuzzy entropy (MFE) was utilized to measure the complexity...

article

Microstructure evolution during laser cladding Fe-Cr alloy coatings on ductile cast iron

Yongjian Li, Shiyun Dong, Shixing Yan, Xiaoting Liu, more

Optics & Laser Technology > 2018 > 108 > C > 255-264

Ductile cast iron illustrates well cast characteristics and abrasive resistance, excellent corrosion resistance and good mechanical properties. Fe-based alloys were always used to repair invalid ductile cast iron components owing to their cheapness in price. But it is difficult to eliminate defects like pores and chilled structure for the remanufacturing of ductile cast iron without preheating and...

article

Investigating driving forces of aggregate carbon intensity of electricity generation in China

Junfeng Wang, Shutong He, Ye Qiu, Nan Liu, more

Energy Policy > 2018 > 113 > C > 249-257

In addition to total CO₂ emissions, an intensity indicator is also important to assess CO₂ emissions from electricity generation, allowing the spatial differences to be analyzed, which is crucial for regionally heterogeneous countries like China. This study analyzed the driving forces of aggregate carbon intensity (ACI), a measure of CO₂ emissions per unit of electricity generation, in China between...

article

Stable palladium hydride as a superior anode electrocatalyst for direct formic acid fuel cells

Jiawei Zhang, Meishan Chen, Huiqi Li, Yongjian Li, more

Nano Energy > 2018 > 44 > C > 127-134

Direct formic acid fuel cells (DFAFCs) are a promising clean power source. To date, palladium (Pd)-based catalysts are the best promising anode catalyst for DFAFCs due to its high anti-poisoning ability and low cost. In this paper, we report a high-efficiency stable PdH_x nanocatalyst towards DFAFCs. The PdH_x nanocatalysts are prepared by simply treating the commercial Pd black with n-butylamine at...

article

Rational integration of hierarchical structural CoS1.097 nanosheets/reduced graphene oxide nanocomposites with enhanced electrocatalytic performance for triiodide reduction

Hong Yuan, Jia Liu, Hansheng Li, Kuo Su, more

Carbon > 2018 > 126 > C > 514-521

A novel hierarchical structural hybrid of two-dimensional CoS_1.097 sheets assembled and decorated on reduced graphene oxide sheets (CoS_1.097/RGO) with an intriguing sandwich-like structure are evaluated as electrocatalyst for the reduction of triiodide. In this composite, RGO worked as high speed electronical conductive platforms facilitates transfer of electrons, while CoS_1.097 nanosheets as high-catalytically...

article

Sustainable collaborative marketing governance mechanism for remanufactured products with extended producer responsibility

Xiukun Zhao, Yongjian Li, Fangchao Xu, Kunxiang Dong

Journal of Cleaner Production > 2017 > 166 > C > 1020-1030

The marketing of remanufactured products has been receiving increasing attention from scholars and practitioners from the perspective of sustainable supply chain governance (SSCG) and extended producer responsibility (EPR). However, the research on remanufactured product marketing under EPR and SSCG mechanisms remains more new exploration. A mathematical model for remanufactured product marketing...

article

Improved 3-D Magnetic Properties Measurement of Silicon Steel Laminations Based on a Novel Sensing Structure

Yongjian Li, Xin Geng, Changgeng Zhang, Rongge Yan, more

IEEE Transactions on Magnetics > 2017 > 53 > 11 > 1 - 4

The precise 3-D magnetic property measurement of the silicon steel is important to improve the efficiency and performance in electrical equipment, such as electrical machines and power transformers. An improved 3-D magnetic property measurement method of the silicon steel laminations is proposed by using a novel sensing structure with interconnecting multiple sensing coils covered on the surface of...

article

Comparison of Limiting Loop Model and Elemental Operator Model for Magnetic Hysteresis of Ferromagnetic Materials

Nana Duan, Weijie Xu, Yongjian Li, Shuhong Wang, more

IEEE Transactions on Magnetics > 2017 > 53 > 11 > 1 - 4

This paper introduces a comparative study of two different hysteresis models, limiting loop model and elemental operator model. The former is regarded as a mathematical approach based on the traditional Preisach model. To circumvent the difficulty of determining the distribution function in the Preisach model, the data of the limiting hysteresis loop and a function transform on the Preisach diagram...

article

Improved High-Frequency Rotating Magnetic Properties Tester for Nanocrystalline Soft Magnetic Material

Yongjian Li, Qing Zhao, Lixiang Wang, Changgeng Zhang, more

IEEE Transactions on Magnetics > 2017 > 53 > 11 > 1 - 4

In order to study and analyze the rotating magnetic properties for nanocrystalline material, an improved 2-D high-frequency magnetic properties tester with step-shaped excitation windings and composite sensing structure is designed and modeled. Magnetic concentration and core poles optimization are performed in 2-D tester construction, which can generate relatively uniform and strong magnetic field...

chapter

Investigation of thermal characteristics of graphene coated contacts for hybrid HVDC circuit breaker

Manareldeen A. H. Ahmed, Yongjian Li, Erping Li

2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) > 333 - 337

2017 4th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST)

High Voltage DC (HVDC) transmission systems are preferable in long distances and has an advantage over high voltage AC systems. One of the key equipment in HVDC system is the HVDC circuit breaker because it has a direct influence on the transmission system reliability. This paper presents an investigation of the thermal characteristics of the DC electric arc on the electrode surface with and without...

article

Facile synthesis of Co0.85Se nanotubes/reduced graphene oxide nanocomposite as Pt-free counter electrode with enhanced electrocatalytic performance in dye-sensitized solar cells

Hong Yuan, Qingze Jiao, Jia Liu, Xiufeng Liu, more

Carbon > 2017 > 122 > C > 381-388

A novel nanocomposite of Co_0.85Se nanotubes with reduced graphene oxide (Co_0.85Se/RGO) is prepared by a facile hydrothermal approach coupled with in situ selenization, which is applied as counter electrode in dye-sensitized solar cells. Electrochemical analysis shows that the Co_0.85Se/RGO composite displays a higher electrocatalytic activity for the reduction of triiodide respect to its single components...

article

Innovative supply chain optimization models with multiple uncertainty factors

Tsan-Ming Choi, Kannan Govindan, Xiang Li, Yongjian Li

Annals of Operations Research > 2017 > 257 > 1-2 > 1-14

Uncertainty is an inherent factor that affects all dimensions of supply chain activities. In today’s business environment, initiatives to deal with one specific type of uncertainty might not be effective since other types of uncertainty factors and disruptions may be present. These factors relate to supply chain competition and coordination. Thus, to achieve a more efficient and effective supply chain...

chapter

Design and analysis of a novel 2-D magnetization structure for magnetic properties measurement in wide range of frequency

Xinran Yu, Qingxin Yang, Yongjian Li, Changgeng Zhang, more

2017 20th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 6

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

Magnetic properties of ferromagnetic materials are important features in power transformer and electrical machine design and manufacture, which should be measured accurately. The measurement data under a small frequency range is given by proposed methods. However, the data at high-frequency needs to be investigated more deeply. A novel 2-D magnetic properties tester for ferromagnetic material specimen...

chapter

Field-circuit coupled T-S finite element analysis of core losses for induction motor

Xuezhi Wan, Yongjian Li, Changgeng Zhang, Qingxin Yang, more

2017 20th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 4

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

A two-dimensional (2-D) field-circuit coupled finite element model of induction motor (IM) is built. The equivalent circuit of three-phase squirrel cage rotor is modeled. Based on time-stepping finite elements analysis (T-S FEA), core loss in the stator of a no-load IM under sinusoidal and Sinusoidal Pulse Width Modulation (SPWM) excitations is studied. The rotating flux density distributions with...

chapter

Core loss calculation of the soft ferrite cores in high frequency transformer under non-sinusoidal excitations

Shuaichao Yue, Qingxin Yang, Yongjian Li, Changgeng Zhang, more

2017 20th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 5

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

Soft ferrite materials are widely used in the construction of high frequency transformer for power electronic applications. Core loss calculation is essential both in the selection of soft ferrites and the design of high frequency transformer. Traditionally, the Steinmetz equation is used to evaluate the core loss of magnetic materials under sinusoidal excitation. Nevertheless, in modern power electronics,...

chapter

Design of a novel high frequency 2-D magnetic tester with nanocrystalline material

Angxuan Li, Yongjian Li, Changgeng Zhang, Qingxin Yang, more

2017 20th International Conference on Electrical Machines and Systems (ICEMS) > 1 - 5

2017 20th International Conference on Electrical Machines and Systems (ICEMS)

The rotating magnetic properties of nanocrystalline materials at high frequencies play an important role in design and optimization of high frequency transformers with large capacity and high performance. In this paper, a novel high frequency rotating magnetic properties tester is designed, which is applied to measure the high frequency rotating magnetic properties of nanocrystalline materials. By...

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MAGNETIC PROPERTIES (20)
MAGNETIC FLUX (16)
CORE LOSS (14)
SUPPLY CHAIN MANAGEMENT (14)
MAGNETIC CORES (13)
SOFT MAGNETIC MATERIALS (13)
COILS (11)
MAGNETIC HYSTERESIS (11)
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ROTORS (10)
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FINITE ELEMENT ANALYSIS (8)
MAGNETIC FIELDS (8)
REMANUFACTURING (8)
SOFT MAGNETIC COMPOSITE (SMC) (8)
GAME THEORY (7)
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INDUCTANCE (6)
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PERMANENT MAGNET MACHINES (6)
SATURATION MAGNETIZATION (6)
SENSING COIL (6)
ANISOTROPY (5)
COMPOSITE MATERIALS (5)
MAGNETIC FIELD MEASUREMENT (5)
MAGNETIC MATERIALS (5)
NUMERICAL MODELS (5)
PRICING (5)
REVERSE LOGISTICS (5)
SATURATION SALIENCY (5)
SOFT MAGNETIC COMPOSITE MATERIAL (5)
SUPPLY CHAINS (5)
TRADE CREDIT (5)
BATTERIES (4)
DYNAMIC PROGRAM (4)
EDDY CURRENTS (4)
EDUCATIONAL INSTITUTIONS (4)
FINITE ELEMENT METHODS (4)
HARMONIC ANALYSIS (4)
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RECYCLING (4)
RESISTANCE (4)
STATORS (4)
STEEL (4)
SUSTAINABILITY (4)
SYNCHRONOUS MACHINES (4)
TENSILE STRESS (4)
THEOREM PROVING (4)
UNCERTAINTY (4)
WINDINGS (4)
3-D MAGNETIC PROPERTIES (3)
ACQUISITION MANAGEMENT (3)
CAPITAL CONSTRAINT (3)
COPPER (3)
COUNTER ELECTRODE (3)
COUPLINGS (3)
CURRENT MEASUREMENT (3)
DURABLE PRODUCTS (3)
DYE-SENSITIZED SOLAR CELLS (3)
DYNAMIC PROGRAMMING (3)
ELECTRIC DRIVES (3)
ELECTRIC MACHINES (3)
FLEXIBLE EXCITATION COIL (3)
GENETIC ALGORITHM (3)
HYBRID ELECTRIC VEHICLES (3)
INTEGRATED CIRCUIT MODELING (3)
INVENTORY CONTROL (3)
INVENTORY MANAGEMENT (3)
LOSS AVERSION (3)
LOSS MEASUREMENT (3)
MAGNETIC CIRCUITS (3)
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NONLINEAR MAGNETIC MODEL (3)
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OPTIMIZATION (3)
PERMANENT MAGNET SYNCHRONOUS MACHINE (3)
PERPENDICULAR MAGNETIC ANISOTROPY (3)
PRICING DECISION (3)
PRODUCT RETURNS (3)
RANDOM YIELD (3)
REDUCED GRAPHENE OXIDE (3)
SECURITY PROTOCOLS (3)
SILICON (3)
STATOR CORES (3)
STOCHASTIC PROCESSES (3)
SUPERCONDUCTING MAGNETS (3)
SUPPLY CHAIN GOVERNANCE (3)
TENSORS (3)
VEHICLES (3)
3-D MAGNETIC TESTER (2)
3-D TESTER (2)
3D FLUX ELECTRICAL MACHINES (2)
ACCELERATION (2)
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INFONA - science communication portal

Search results for: Yongjian Li

ZrO₂ Matrix Toughened Ceramic Material‐Strength and Toughness

Optimal Financing Models Offered by Manufacturers with Risk Aversion and Market Competition Considerations

Safety and efficacy of bone marrow-derived cells therapy on cardiomyopathy: a meta-analysis

Margination mechanism of stiffened red blood cell in microchannel with different cross-section shapes

Refined composite multiscale fuzzy entropy: Localized defect detection of rolling element bearing

Microstructure evolution during laser cladding Fe-Cr alloy coatings on ductile cast iron

Investigating driving forces of aggregate carbon intensity of electricity generation in China

Stable palladium hydride as a superior anode electrocatalyst for direct formic acid fuel cells

Rational integration of hierarchical structural CoS1.097 nanosheets/reduced graphene oxide nanocomposites with enhanced electrocatalytic performance for triiodide reduction

Sustainable collaborative marketing governance mechanism for remanufactured products with extended producer responsibility

Improved 3-D Magnetic Properties Measurement of Silicon Steel Laminations Based on a Novel Sensing Structure

Comparison of Limiting Loop Model and Elemental Operator Model for Magnetic Hysteresis of Ferromagnetic Materials

Improved High-Frequency Rotating Magnetic Properties Tester for Nanocrystalline Soft Magnetic Material

Investigation of thermal characteristics of graphene coated contacts for hybrid HVDC circuit breaker

Facile synthesis of Co0.85Se nanotubes/reduced graphene oxide nanocomposite as Pt-free counter electrode with enhanced electrocatalytic performance in dye-sensitized solar cells

Innovative supply chain optimization models with multiple uncertainty factors

Design and analysis of a novel 2-D magnetization structure for magnetic properties measurement in wide range of frequency

Field-circuit coupled T-S finite element analysis of core losses for induction motor

Core loss calculation of the soft ferrite cores in high frequency transformer under non-sinusoidal excitations

Design of a novel high frequency 2-D magnetic tester with nanocrystalline material

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